When ever i play Battlefield 2 for more than about 20 mins the computer freezes and i have to restart my PC
I have a P4 2.8Ghz - 4 fans - Raedeon 9600 GPU - Standard PSU

Why would it be doing this

Memory, overheating, drivers, lots of things. Have you recently done any changes to your computers configuration?

Thanks for the reply
Yeah ive found the problem - heat issues
The fan on the GPU isnt running properly
Ill sort it - thanks again